docs: indentation fixes

docs/data-model.rst

@@ -60,7 +60,8 @@ Data model
      :param customfields:
      :type customfields: :py:class:`CustomFields` or None
 
-TODO: talk about to_xml, from_xml, to_json, from_json
+  ..
+     TODO: talk about to_xml, from_xml, to_json, from_json
 
   .. py:classmethod:: from_xml(cls, fileobj)
 
@@ -109,11 +110,11 @@ Results
 
 .. py:class:: Issue(Result)
 
-An :py:class:`Issue` represents a report from the analyzer about a
-possible problem with the software under test.
+   An :py:class:`Issue` represents a report from the analyzer about a
+   possible problem with the software under test.
 
-It corresponds to the ``<issue>`` XML element within a
-Firehose XML document.
+   It corresponds to the ``<issue>`` XML element within a
+   Firehose XML document.
 
    .. py:attribute:: cwe
 
@@ -227,12 +228,12 @@ Firehose XML document.
 
 .. py:class:: Info(Result)
 
-An :py:class:`Info` represents additional kinds of information
-generated by an analyzer that isn't a problem per-se e.g.
-code metrics, licensing info, cross-referencing information, etc.
+   An :py:class:`Info` represents additional kinds of information
+   generated by an analyzer that isn't a problem per-se e.g.
+   code metrics, licensing info, cross-referencing information, etc.
 
-It corresponds to the ``<info>`` XML element within a
-Firehose XML document.
+   It corresponds to the ``<info>`` XML element within a
+   Firehose XML document.
 
    .. py:attribute:: infoid